Thorax and Abdomen Motion Analysis in Patients with Obstructive DiseasesAïcha Laouani1*, Sonia Rouatbi3, Saad Saguem1and Pascale Calabrese2
2Laboratory of Techniques de l’Ingénierie Médicale et de la Complexité - Informatique, Mathématiques et Applications, Grenoble (TIMC-IMAG) – PRETA team-CNRS: UMR5525 - Université Joseph Fourier – Grenoble I, France
- *Corresponding Author:
- Aicha Laouani
Laboratory of Biophysics, Faculty of Medicine of Sousse
Tel: +216 58850201
Fax: +216 73 228994
Received date: December 05, 2015; Accepted date: January 13, 2016; Published date:/strong> January 18, 2016
Citation:Laouani A, Rouatbi S, Saguem S, Calabrese P (2016) Thorax and Abdomen Motion Analysis in Patients with Obstructive Diseases. J Pulm Respir Med 6:313. doi:10.4172/2161-105X.1000313
Copyright: © 2016 Laouani A, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited
Objective: We evaluated changes in bronchoconstriction by a new approach based on respiratory inductive plethysmography (RIP) signal analysis.
Methods: Thoracic and abdominal motions were recorded (5 min) by uncalibrated RIP in 44 adult subjects with a diagnosis of moderate bronchial obstruction (Obstructive group) and 50 healthy adult controls (Healthy group). In the Obstructive group, two series of measurements were performed before (Obstructive PRE) and after (Obstructive POST) a bronchodilation protocol. Airway resistance (Raw) and lung function data (forced vital capacity (FVC), forced expiratory volume in one second (FEV1 ) and FEV1 /FVC) were measured with a body plethysmograph. A breath-bybreath analysis was performed to calculate distances between normalized thorax and abdomen RIP signals and a mean distance (D) was calculated for each recording.
Results: D and Raw were higher in the Obstructive group than in the Healthy group in both PRE and POST conditions. Both D and Raw significantly decreased after bronchodilation in the Obstructive group. D and Raw were also positively and significantly correlated in the Obstructive group in both PRE and POST conditions.
Conclusion: D, as calculated from signals recorded by RIP, appears to be a useful non-invasive parameter for continuous monitoring of changes in bronchoconstriction.